Home / 10,285.82-15,428.73-2,890.12

Finding the Fourth Proportional to 10,285.82, 15,428.73 and 2,890.12

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Solution

The fourth proportional to 10,285.82, 15,428.73 and 2,890.12 is: 4,335.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,285.82 : 15,428.73 = 2,890.12 : x
  2. Step 2: Convert to fraction form
    10,285.82/15,428.73 = 2,890.12/x
  3. Step 3: Cross multiply
    10,285.82x = 15,428.73 × 2,890.12
  4. Step 4: Simplify right side
    10,285.82x = 44,590,881.15
  5. Step 5: Solve for x
    x = 44,590,881.15/10,285.82
  6. Step 6: Final answer
    x = 4,335.18

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.